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/*
* Copyright (C) 2014 The CyanogenMod Project
*
* Licensed under the Apache License, Version 2.0 (the "License"); you may not
* use this file except in compliance with the License. You may obtain a copy of
* the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
* License for the specific language governing permissions and limitations under
* the License.
*/
package com.android.systemui.statusbar.phone;
import android.animation.Animator;
import android.animation.ObjectAnimator;
import android.annotation.NonNull;
import android.app.ActivityManager;
import android.graphics.Canvas;
import android.graphics.ColorFilter;
import android.graphics.Rect;
import android.graphics.drawable.Drawable;
import android.util.FloatProperty;
import android.util.Property;
public class BackButtonDrawable extends Drawable {
private final Drawable mWrappedDrawable;
private float mRotation;
private Animator mCurrentAnimator;
private static final int ANIMATION_DURATION = 200;
public static final Property<BackButtonDrawable, Float> ROTATION
= new FloatProperty<BackButtonDrawable>("rotation") {
@Override
public void setValue(BackButtonDrawable object, float value) {
object.setRotation(value);
}
@Override
public Float get(BackButtonDrawable object) {
return object.getRotation();
}
};
public BackButtonDrawable(Drawable wrappedDrawable) {
mWrappedDrawable = wrappedDrawable;
}
@Override
public void draw(Canvas canvas) {
final Rect bounds = mWrappedDrawable.getBounds();
final int boundsCenterX = bounds.width() / 2;
final int boundsCenterY = bounds.height() / 2;
canvas.translate(boundsCenterX, boundsCenterY);
canvas.rotate(mRotation);
canvas.translate(- boundsCenterX, - boundsCenterY);
mWrappedDrawable.draw(canvas);
}
@Override
public void setBounds(Rect bounds) {
mWrappedDrawable.setBounds(bounds);
}
@Override
public void setBounds(int left, int top, int right, int bottom) {
mWrappedDrawable.setBounds(left, top, right, bottom);
}
@Override
protected void onBoundsChange(Rect bounds) {
mWrappedDrawable.setBounds(bounds);
}
@Override
public void setAlpha(int alpha) {
mWrappedDrawable.setAlpha(alpha);
if (mCurrentAnimator != null) {
mCurrentAnimator.end();
}
}
@Override
public int getAlpha() {
return mWrappedDrawable.getAlpha();
}
@Override
public void setColorFilter(ColorFilter cf) {
}
@Override
public int getOpacity() {
return mWrappedDrawable.getOpacity();
}
@Override
public int getIntrinsicWidth() {
return mWrappedDrawable.getIntrinsicWidth();
}
@Override
public int getIntrinsicHeight() {
return mWrappedDrawable.getIntrinsicHeight();
}
public void setRotation(float rotation) {
mRotation = rotation;
invalidateSelf();
}
public float getRotation() {
return mRotation;
}
public void setImeVisible(boolean ime) {
if (mCurrentAnimator != null) {
mCurrentAnimator.cancel();
}
final float nextRotation = ime ? - 90 : 0;
if (mRotation == nextRotation) {
return;
}
if (isVisible() && ActivityManager.isHighEndGfx()) {
mCurrentAnimator = ObjectAnimator.ofFloat(this, ROTATION, nextRotation)
.setDuration(ANIMATION_DURATION);
mCurrentAnimator.start();
} else {
setRotation(nextRotation);
}
}
}
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